Question

The energy gap `(E_g)` between valence band and conduction band for diamond, silicon and germanium are in the order
A. `E_g "(diamond) gt " E_(g) "(silicon) gt " E_g "(germanium)"`
B. `E_g "(diamond) lt " E_(g) "(silicon) lt " E_g "(germanium)"`
C. `E_g "(diamond) = " E_(g) "(silicon) = " E_g "(germanium)"`
D. `E_g "(diamond) gt " E_(g) "(germanium) gt " E_g "(silicon)"`

Answer 1

Correct Answer - A
(a) is correct option because diamond is an insulator and non-metallic character decreases down the group.